A woman cries and holds flowers in front of a makeshift memorial to remember the victims of a mass shooting in Orlando, Fla., in New York, Sunday, June 12, 2016. A gunman wielding an assault-type rifle and a handgun opened fire inside a crowded gay nightclub early Sunday before dying in a gunfight with SWAT officers. (AP Photo/Andres Kudacki)

A mourner holds up an American flag and a candle during a vigil for a fatal shooting at an Orlando nightclub, Sunday, June 12, 2016, in Atlanta. (AP Photo/David Goldman)

A man holds a candle and a rainbow flag during a vigil in memory of the victims of the Orlando mass shooting, Sunday, June 12, 2016, in Miami Beach, Fla.A gunman opened fire inside a crowded gay nightclub early Sunday, before dying in a gunfight with SWAT officers, police said. (AP Photo/Lynne Sladky)

Rachel Henry, from left, Selene Arciga, Nicolette Gullickson and Joanna Lamstein join members and supporters of the LGBT as they gather for a candlelight vigil in front of the White House in Washington, Sunday, June 12, 2016, in support for the victims and their families and friends, who were killed and injured in a massacre at an Orlando nightclub. (AP Photo/Manuel Balce Ceneta)

Paul Cox, right, cries while embracing Kevin Esch during a vigil for a fatal shooting at an Orlando nightclub, Sunday, June 12, 2016, in Atlanta. (AP Photo/David Goldman)

A mourner lights a candle during a vigil after a fatal shooting at an Orlando nightclub Sunday, June 12, 2016, in Atlanta. (AP Photo/David Goldman)

The name "Orlando" is spelled out in candles at a vigil after a fatal shooting at an Orlando nightclub Sunday, June 12, 2016, in Atlanta. (AP Photo/David Goldman)

John Becker, center, speaks to fellow members and supporters of the LGBT as they gather for a candlelight vigil in front of the White House in Washington, Sunday, June 12, 2016, in support for the victims and their families and friends, who were killed and injured in a massacre at an Orlando nightclub. (AP Photo/Manuel Balce Ceneta)

A message spelled out in candles is laid out at a vigil after a fatal shooting at an Orlando nightclub, Sunday, June 12, 2016, in Atlanta. (AP Photo/David Goldman)

Rachel Henry, left, and Selene Arciga, kiss to show their solidarity with members and supporters of the LGBT gathered for a candlelight vigil in front of the White House in Washington, Sunday, June 12, 2016, in support for the victims and their families and friends, who were killed and injured in a massacre at an Orlando nightclub. (AP Photo/Manuel Balce Ceneta)

Members and supporters of the LGBT gather for a candlelight vigil in front of the White House in Washington, Sunday, June 12, 2016, in support for the victims and their families and friends, who were killed and injured in a massacre at an Orlando nightclub. (AP Photo/Manuel Balce Ceneta)

A woman cries in front of a makeshift memorial to remember the victims of a mass shooting in Orlando, Fla., in New York, Sunday, June 12, 2016. A gunman wielding an assault-type rifle and a handgun opened fire inside a crowded gay nightclub early Sunday before dying in a gunfight with SWAT officers. (AP Photo/Andres Kudacki)

A man holds a flag as they stand in front of a makeshift memorial to remember the victims of a mass shooting in Orlando, Fla., in New York, Sunday, June 12, 2016. A gunman wielding an assault-type rifle and a handgun opened fire inside a crowded gay nightclub early Sunday before dying in a gunfight with SWAT officers. (AP Photo/Andres Kudacki)

Two woman light candle during a vigil in front of the U.S. embassy to remember the victims of the mass shooting at the Pulse Orlando, Fla. nightclub, in Santiago, Chile, Sunday, June 12, 2016. A gunman opened fire inside the nightclub early Sunday, killing at least 50 people before dying in a gunfight with SWAT officers, police said. (AP Photo/Esteban Felix)

Two woman hold a candle during a vigil in front of the U.S. embassy to remember the victims of the mass shooting at the Pulse Orlando, Fla. nightclub, in Santiago, Chile, Sunday, June 12, 2016. A gunman opened fire inside the nightclub early Sunday, killing at least 50 people before dying in a gunfight with SWAT officers, police said. (AP Photo/Esteban Felix)

A man lights a candle during a vigil in front of the U.S. embassy to remember the victims of the mass shooting at the Pulse Orlando, Fla. nightclub, in Santiago, Chile, Sunday, June 12, 2016. A gunman opened fire inside the nightclub early Sunday, killing at least 50 people before dying in a gunfight with SWAT officers, police said. (AP Photo/Esteban Felix)

Mourners observe a moment of silence during a vigil for victims of a fatal shooting at an Orlando nightclub, Sunday, June 12, 2016, in Atlanta. (AP Photo/David Goldman)

Police officers stand guard down the street from the scene of a shooting involving multiple fatalities at a nightclub in Orlando, Fla., Sunday, June 12, 2016. (AP Photo/Phelan M. Ebenhack)

Family members wait for word from police after arriving down the street from a shooting involving multiple fatalities at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. (AP Photo/Phelan M. Ebenhack)

Police cars and fire trucks are seen outside the Pulse night club where police said a suspected gunman left multiple people dead and injured in Orlando, Florida, June 12, 2016. Orlando Police Department/Handout via REUTERSFOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNSTHIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

Police lock down Orange Avenue around Pulse nightclub, where people were killed by a gunman in a shooting rampage in Orlando, Florida June 12, 2016. REUTERS/Kevin Kolczynski

Officers arrive at the Orlando Police Headquarters during the investigation of a shooting at the Pulse nightclub, where people were killed by a gunman, in Orlando, Florida, U.S June 12, 2016. REUTERS/Steve Nesius

Friends and family members embrace outside the Orlando Police Headquarters during the investigation of a shooting at the Pulse nightclub, where people were killed by a gunman, in Orlando, Florida, U.S June 12, 2016. REUTERS/Steve Nesius TPX IMAGES OF THE DAY

People shout slogans as they gather in front of a makeshift memorial to remember the victims of a mass shooting in Orlando, Fla., in New York, Sunday, June 12, 2016. A gunman wielding an assault-type rifle and a handgun opened fire inside a crowded gay nightclub early Sunday before dying in a gunfight with SWAT officers. The attack killed at least 50 people dead, making it the deadliest mass shooting in American history. Authorities were investigating it as an act of terrorism. (AP Photo/Andres Kudacki)

Couple hug and kiss in front of a makeshift memorial to remember the victims of a mass shooting in Orlando, Fla., in New York, Sunday, June 12, 2016. A gunman wielding an assault-type rifle and a handgun opened fire inside a crowded gay nightclub early Sunday before dying in a gunfight with SWAT officers. (AP Photo/Andres Kudacki)

Friends and family members embrace outside the Orlando Police Headquarters during the investigation of a shooting at the Pulse night club, where as many as 20 people have been injured after a gunman opened fire, in Orlando, Florida, U.S June 12, 2016. REUTERS/Steve Nesius TPX IMAGES OF THE DAY

Caleb McGrew, 36, right, wipes tears as he stands with his partner Yosniel Delgado Giniebra, 37, center, during a vigil in memory of the victims of the Orlando mass shooting, Sunday, June 12, 2016, in Miami Beach, Fla.A gunman opened fire inside a crowded gay nightclub early Sunday, before dying in a gunfight with SWAT officers, police said. (AP Photo/Lynne Sladky)

A message of the screen during a prayer vigil at the Joy Metropolitan Community Church after a fatal shooting at the Pulse Orlando nightclub Sunday, June 12, 2016, in Orlando, Fla. (AP Photo/Chris O'Meara)

Fiona Dawson, left, and her boyfriend Emil Pagliarulo, join members and supporters of the LGBT as they gather for a candlelight vigil in front of the White House in Washington, Sunday, June 12, 2016, in support for the victims and their families and friends, who were killed and injured in a massacre at an Orlando nightclub. (AP Photo/Manuel Balce Ceneta)

Juan Mantilla, 42, of Miami Beach, Fla., left, stands with his partner during a vigil in memory of the victims of the Orlando mass shooting, Sunday, June 12, 2016, in Miami Beach, Fla. A gunman opened fire inside a crowded gay nightclub early Sunday, before dying in a gunfight with SWAT officers, police said. (AP Photo/Lynne Sladky)